[INFO] fetching crate prometheus-manager 0.0.30...
[INFO] checking prometheus-manager-0.0.30 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate prometheus-manager 0.0.30 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate prometheus-manager 0.0.30
[INFO] finished tweaking crates.io crate prometheus-manager 0.0.30
[INFO] tweaked toml for crates.io crate prometheus-manager 0.0.30 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate prometheus-manager 0.0.30 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 77 packages to latest compatible versions
[INFO] [stderr]       Adding env_logger v0.10.2 (available: v0.11.8)
[INFO] [stderr]       Adding rust-embed v6.8.1 (available: v8.7.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded human-readable v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4755bbd1e47ed4ebeaf65dd7e0d9b9a7c25dc5ae7c38e8b90569fff16e10d30e
[INFO] running `Command { std: "docker" "start" "-a" "4755bbd1e47ed4ebeaf65dd7e0d9b9a7c25dc5ae7c38e8b90569fff16e10d30e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4755bbd1e47ed4ebeaf65dd7e0d9b9a7c25dc5ae7c38e8b90569fff16e10d30e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4755bbd1e47ed4ebeaf65dd7e0d9b9a7c25dc5ae7c38e8b90569fff16e10d30e", kill_on_drop: false }`
[INFO] [stdout] 4755bbd1e47ed4ebeaf65dd7e0d9b9a7c25dc5ae7c38e8b90569fff16e10d30e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4ab36c46f7a0f569ec0a734604213c076c56f7a92ad83580ca6ca74bb86d0c9
[INFO] running `Command { std: "docker" "start" "-a" "d4ab36c46f7a0f569ec0a734604213c076c56f7a92ad83580ca6ca74bb86d0c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking is-terminal v0.4.16
[INFO] [stderr]     Checking human-readable v0.0.1
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking humantime v2.2.0
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]    Compiling rust-embed-utils v7.8.1
[INFO] [stderr]     Checking chrono v0.4.41
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling rust-embed-impl v6.8.1
[INFO] [stderr]     Checking rust-embed v6.8.1
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking prometheus-manager v0.0.30 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Metric` instead of cloning the inner type
[INFO] [stdout]     --> src/lib.rs:3534:33
[INFO] [stdout]      |
[INFO] [stdout] 3534 |         assert_eq!(matched[i], v.clone(), "mismatched at {}", i);
[INFO] [stdout]      |                                 ^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.05s
[INFO] running `Command { std: "docker" "inspect" "d4ab36c46f7a0f569ec0a734604213c076c56f7a92ad83580ca6ca74bb86d0c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4ab36c46f7a0f569ec0a734604213c076c56f7a92ad83580ca6ca74bb86d0c9", kill_on_drop: false }`
[INFO] [stdout] d4ab36c46f7a0f569ec0a734604213c076c56f7a92ad83580ca6ca74bb86d0c9